Mightform Harmonizer card art

Mightform Harmonizer

Creature — Insect Druid MV 4

Tracked across real Commander games played through TurnZero HQ.

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What it doesRulingsIn the 99Every version

What it does

Landfall — Whenever a land you control enters, double the power of target creature you control until end of turn.

Warp 2 (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)

Rulings

2 official rulings, in the order Wizards published them.

  • 2025-07-25

    If an effect instructs you to “double” a creature’s power, that creature gets +X/+0, where X is its power as that effect begins to apply. Similarly, a creature whose toughness is doubled gets +0/+X, where X is its toughness as the effect begins to apply.

  • 2025-07-25

    If a creature’s power is less than 0 when it’s doubled, instead that creature gets -X/-0, where X is how much less than 0 its power is. For example, if an effect has given Bear Cub, a 2/2 creature, -4/-0 so that it’s a -2/2 creature, doubling its power and toughness gives it -2/+2, and it becomes a -4/4 creature.

Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.

In the 99

Every deck whose current list includes Mightform Harmonizer, whatever its commander.

Decks running it 1
Games played 0
Win rate — Fewer than 5 completed games, which is not enough to publish a rate yet.
Confirmed on board 0 Games where a board photo caught it actually in play.

Most played under

Commander Decks Games Win rate
Tifa Lockhart 1 0 —

Colors it shows up in

  • Mono-Green 1 deck

Every version of Mightform Harmonizer

4 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly. A printing with no figure shows a dash rather than a zero, because Scryfall publishes none for some of them.

Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Mightform Harmonizer. It runs a name search across every version, which covers the printings TCGplayer publishes no direct link to.

Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only. No individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.